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| 1 | Metal organic frameworks derived single atom catalysts for electrocatalytic energy conversion显示文摘The development of efficient and cost-effective catalysts to catalyze a wide variety of electrochemical reactions is key to realize the large-scale applicati on of ren ewable and clean en ergy tech no logies.Owing to the maximum atom-utilization efficie ncy and unique electronic and geometric structures,single atom catalysts(SACs)have exhibited superior performance in various catalytic systems.Recently,assembled from the function alized orga nic lin kers and metal no des,metal-organic frameworks(MOFs)with ultrafi ne porosity have received treme ndous attention as precursors or self-sacrificing templates for preparing porous SACs.Here,the recent advances toward the synthesis strategies for using MOF precursors/templates to con struct SACs are systematically summarized with special emphasis on the types of central metal sites.The electrochemical applications of these recently emerged MOF-derived SACs for various energy-conversion processes,such as oxygen reduction/evolution reaction(ORR/OER),hydrogen evolution reaction(HER),and CO2 reduction reaction(CO2RR),are also discussed and reviewed.Fin ally,the curre nt challe nges and prospects regardi ng the developme nt of MOF-derived SACs are proposed. | Tingting Sun Lianbin Xu Dingsheng Wang Yadong Li | 2019 | Nano Research2019，12，9： | 63 |
| 2 | Metal foams: A survey显示文摘The current state-of-the-art in the development of cellular metal foams is reviewed, with focus on their fabrication, mechanical/thermal/acoustic properties, and potential applications as lightweight panels, energy absorbers, heat exchangers, and acoustic liners. Foam property charts with scaling relations are presented, allowing scoping and selection through the use of material indices. | Michael F.Ashby 卢天健 | 2003 | Science China Chemistry2003，46，6： | 45 |
| 3 | 直流GIL中自由线形金属微粒的运动与放电特性显示文摘针对直流GIL中较常见且具有严重影响的自由线形金属微粒,搭建了贴合实际工况的封闭式同轴圆柱电极平台,同时使用高速相机和局放监测手段观测线形金属微粒的运动、局放与击穿行为。定量获得了微粒长度对站立与跳跃两种不同运动模式发生概率的影响;拍摄了站立线形微粒引起的电晕图像,同时监测、提取并统计微粒引起的局部放电情况;记录金属微粒引起的击穿图像,并基于流注理论分析了自由线形金属微粒引起的气隙击穿特性。研究表明:线形微粒的起动场强与微粒的长度基本无关,而与微粒的半径开方成正比,微粒越短,起动后越易达到跳跃运动状态,而微粒越长,越易保持站立状态;微粒引起的局部放电随着微粒长度的增大而更加剧烈;对于跳跃的自由线形微粒,其引起的微放电击穿间距随着微粒长度的增加而增加,击穿电压随着微粒长度的增加而降低。 | 王健 李庆民 李伯涛 刘思华 王志远 | 2016 | 中国电机工程学报2016，36，17： | 31 |
| 4 | Source tracing of noble metal elements in Lower Cambrian black rock series of Guizhou-Hunan Provinces, China显示文摘The Lower Cambrian black rock series of South China is abnormally rich in noble metal elements. According to the concentrations, the ratios, the relations, the distribution and partition patterns of noble metal elements, the authors think that the noble metals and other elements are neither directly from extraterrestrial materials, nor from the products of normal marine sedimentation. The abnormal enrichment of noble metal elements is closely related with hydrothermal fluid that flew out on the sea floor through deep cycling and reaction with Proterozoic ultramafic-mafic igneous rocks forming noble metal rich fluid. It is possible to form industrial multiple-element-ore-deposits, especially hydrothermal type platinum-group-element-ore-deposits in the region with strong hydrothermal action. | 李胜荣 高振敏 | 2000 | Science China Earth Sciences2000，43，6： | 23 |
| 5 | Review of metal matrix composites with high thermal conductivity for thermal management applications | Xuan-hui QU Lin ZHANG Mao WU Shu-bin REN | 2011 | Progress in Natural Science:Materials International2011，21，3： | 22 |
| 6 | Cold metal transfer(CMT) technology-An overview显示文摘Cold Metal Transfer technology has revolutionized the welding of dissimilar metals and thicker materials by producing improved weld bead aesthetics with controlled metal deposition and low heat-input. In this study, the process, weld combinations, laser-CMT hybrid welding and applications of CMT welding are critically reviewed. Microstructure and other weld characteristics have been discussed at length for various base metal combinations. Particularly, the welding of aluminium and steel with better results has been possible with CMT Welding. The results reviewed in this article indicate that the CMT-Laser hybrid welding is more preferable to Laser or Laser hybrid welding. CMT welding has found applications in automobile industries, defence sectors and power plants as a method of additive manufacturing. | S.Selvi A.Vishvaksenan E.Rajasekar | 2018 | Defence Technology(防务技术)2018，14，1： | 22 |
| 7 | Recent Advances in Energy Chemical Engineering of Next-Generation Lithium Batteries显示文摘Rechargeable lithium-ion batteries(LIBs)afford a profound impact on our modern daily life.However,LIBs are approaching the theoretical energy density,due to the inherent limitations of intercalation chemistry;thus,they cannot further satisfy the increasing demands of portable electronics,electric vehicles,and grids.Therefore,battery chemistries beyond LIBs are being widely investigated.Next-generation lithium(Li)batteries,which employ Li metal as the anode and intercalation or conversion materials as the cathode,receive the most intensive interest due to their high energy density and excellent potential for commercialization.Moreover,significant progress has been achieved in Li batteries attributed to the increasing fundamental understanding of the materials and reactions,as well as to technological improvement.This review starts by summarizing the electrolytes for next-generation Li batteries.Key challenges and recent progress in lithium-ion,lithium–sulfur,and lithium–oxygen batteries are then reviewed from the perspective of energy and chemical engineering science.Finally,possible directions for further development in Li batteries are presented.Next-generation Li batteries are expected to promote the sustainable development of human civilization. | Xue-Qiang Zhang Chen-Zi Zhao Jia-Qi Huang Qiang Zhang | 2018 | Engineering2018，4，6： | 22 |
| 8 | Lithium–matrix composite anode protected by a solid electrolyte layer for stable lithium metal batteries显示文摘Lithium (Li) metal with an ultrahigh specific theoretical capacity and the lowest reduction potential is strongly considered as a promising anode for high-energy-density batteries. However, uncontrolled lithium dendrites and infinite volume change during repeated plating/stripping cycles hinder its practical applications immensely. Herein, a house-like Li anode (housed Li) was designed to circumvent the above issues. The house matrix was composed of carbon fiber matrix and affords a stable structure to relieve the volume change. An artificial solid electrolyte layer was formed on composite Li metal, just like the roof of a house, which facilitates uniform Li ions diffusion and serves as a physical barrier against electrolyte corrosion. With the combination of solid electrolyte layer and matrix in the composite Li metal anode, both dendrite growth and volume expansion are remarkably inhibited. The housed Li|LiFePO4 batteries exhibited over 95% capacity retention after 500 cycles at 1.0 C in coin cell and 85% capacity retention after 80 cycles at 0.5 C in pouch cell. The rationally combination of solid electrolyte layer protection and housed framework in one Li metal anode sheds fresh insights on the design principle of a safe and long-lifespan Li metal anode for Li metal batteries. | Xin Shen Xinbing Cheng Peng Shi Jiaqi Huang Xueqiang Zhang Chong Yan Tao Li Qiang Zhang | 2019 | Journal of Energy Chemistry2019，28，10： | 23 |
| 9 | Removal of heavy metals from sewage sludge by low costing chemical method and recycling in agriculture显示文摘RemovalofheavymetalsfromsewagesludgebylowcostingchemicalmethodandrecyclinginagricultureWuQitang,NyirandegePascasie,MoCehuiF... | Wu Qi tang, Nyirandege Pascasie, Mo Ce hui Faculty of Resources and Environments, South China Agricultural University, Guangzhou 510642, China Lin Yi Datansha Wastewater Treatment Plant, Guangzhou 510160, China | 1998 | Journal of Environmental Sciences1998，10，1： | 21 |
| 10 | EFFECTS OF SPECIFIED BLANK SIZE ON BODY WRINKLING DURING HYDRODYNAMIC DEEP DRAWING OF TAPERED RECTANGULAR BOX显示文摘In this paper, the forming features of tapered rectangular box during hydrodynamic deep drawing are studied by means of FEM.The effect rules of square blank corner corner amount on body wrinkling are recognized and corresponding methods are discussed. At last, the results of FEM are verified by experi- ment. | L. H. Lang, D. C. Kang, S. H. Zhang, Z. R. Wang, S. J. Yuan, K. B. Nielsen and J. Dancket 1) Department of Materials Engineering, Harbin Institute of Technology, Harbin 150001, China 2) Aalberg University, Denmark | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 21 |
| 11 | Toxicity of cadmium and its competition with mineral nutrients for uptake by plants:A review显示文摘Cadmium(Cd)is a toxic heavy metal occurring in the environment naturally and is also generated through various anthropogenic sources and acts as a pollutant.Human health is affected by Cd pollution in farmland soils because food is the main source of Cd intake in the non-smoking population.For crops,Cd toxicity may result from a disturbance in uptake and translocation of mineral nutrients and disturbance in plant metabolism,inhibiting plant growth and development.However,plants have Cd tolerance mechanisms,including restricted Cd uptake,decreased Cd root-to-shoot translocation,enhanced antioxidant enzyme activities,and increased production of phytochelatins.Furthermore,optimal supply of mineral nutrients is one of the strategies to alleviate the damaging effects of Cd on plants and to avoid its entry into the food chain.The emerging molecular knowledge contributes to understanding Cd uptake,translocation,and remobilization in plants.In this review,Cd toxicity and tolerance mechanisms,agricultural practices to minimize Cd accumulation,Cd competition with essential elements(calcium,copper,iron,zinc,and manganese),and genes associated with Cd uptake are discussed in detail,especially regarding how these mineral nutrients and genes play a role in decreasing Cd uptake and accumulation in crop plants. | Shiyu QIN Hongen LIU Zhaojun NIE Zed RENGEL Wei GAO Chang LI Peng ZHAO | 2020 | Pedosphere2020，30，2： | 20 |
| 12 | Prediction and prevention of rockburst in metal mines--A case study of Sanshandao gold mine显示文摘Rockburst is a kind of artificial earthquake induced by human activities,such as mining excavations.The mechanism of rockburst induced by mining disturbance is revealed in terms of energy in this context.For understanding the rockburst mechanism,two necessary conditions for the occurrence of rockburst are presented:(1)the rock mass has the capability to store huge amount of energy and possesses a strong bumping-prone characteristic when damaged;and(2)the geological conditions in the mining area have favorable geo-stress environments that can form high-stress concentration area and accumulate huge energy.These two conditions are also the basic criteria for prediction of rockburst.In view of energy analysis,it is observed that artificial and natural earthquakes have similar regularities in many aspects,such as the relationship between the energy value and burst magnitude.By using the relationship between energy and magnitude of natural earthquake,rockburst is predicted by disturbance energy analysis.A practical example is illustrated using the above-mentioned theorem and technique to predict rockburst in a gold mine in China.Finally,the prevention and control techniques of rockburst are also provided based on the knowledge of the rockburst mechanism. | meifeng cai | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，2： | 18 |
| 13 | 程序控温消解-原子吸收光谱法分析土壤中的铅、镉、镍和铬显示文摘1引言近年来由于工业的快速发展和环保意识的缺失,占全国农田总数1/6的耕地受到不同程度的重金属污染。因此,准确测定土壤中的重金属,对指导土壤的重金属修复将起到积极作用。土壤中重金属的仪器分析方法主要包括X射线荧光光谱法[1]、原子发射光谱法[2]、原子吸收光谱法[3]以及电感耦合等离子体质谱法[4]。 | 孔光辉 李勇 刘亚丽 | 2012 | 分析化学2012，40，12： | 16 |
| 14 | A highly alkaline-stable metal oxide@metal-organic framework composite for high-performance electrochemical energy storage显示文摘Most metal-organic frameworks(MOFs) hardly maintain their physical and chemical properties after exposure to alkaline aqueous solutions,thus precluding their use as potential electrode materials for electrochemical energy storage devices.Here,we present the design and synthesis of a highly alkaline-stable metal oxide@MOF composite,Co3O4 nanocube@Co-MOF(Co3O4@Co-MOF),via a controllable and facile one-pot hydrothermal method under highly alkaline conditions.The obtained composite possesses exceptional alkaline stability,retaining its original structure in 3.0 M KOH for at least 15 days.Benefitting from the exceptional alkaline stability,unique structure,and larger surface area,the Co3O4@Co-MOF composite shows a specific capacitance as high as 1020 F g-1 at 0.5 A g-1 and a high cycling stability with only 3.3% decay after 5000 cycles at 5 A g-1.The as-constructed solid-state flexible device exhibits a maximum energy density of 21.6 mWh cm-3. | Shasha Zheng Qing Li Huaiguo Xue Huan Pang Qiang Xu | 2020 | National Science Review2020，7，2： | 16 |
| 15 | Palliative treatment for incurable malignant colorectal obstructions: A meta-analysis显示文摘AIM:To perform a meta-analysis of palliative stent placement vs palliative surgical decompression for management of incurable malignant colorectal obstructions.METHODS:The databases of Medline,Web of Science,Embase,and the Cochrane Central Register of Controlled Trials were searched from their inception to July 2012 for studies(prospective,retrospective,randomized controlled trials,and case-control trials)designed as comparative analyses of patients with incurable malignant colorectal obstructions treated by selfexpanding metallic stents(SEMS)or palliative surgery.No language restrictions were imposed.The main outcome measures were hospital stay,intensive care unit admission,clinical success rate,30-d mortality,stoma formation,complications,and overall survival time.The data extraction was conducted by two investigators working independently and using a standardized form.The Mantel-Haenszel 2method was used to estimate the pooled risk ratios with 95%CI under a fixed-effects model;when statistical heterogeneity existed in the pooled data(as evaluated by Q test and I2statistics,where P<0.10 and I2<25%indicated heterogeneity),a random-effects model was used.RESULTS:Thirteen relevant articles,representing837 patients(SEMS group,n=404;surgery group,n=433),were selected for analysis.Compared to the surgery group,the SEMS group showed lower clinical success(99.8%vs 93.1%,P=0.0009)but shorter durations of hospital stay(18.84 d vs 9.55 d,P<0.00001)and time to initiation of chemotherapy(33.36 d vs15.53 d,P<0.00001),and lower rate of stoma formation(54.0%vs 12.7%,P<0.00001).Additionally,the SEMS group experienced a significantly lower rate of30-d mortality(4.2%vs 10.5%,P=0.01).Stent-related complications were not uncommon and included perforation(10.1%),migration(9.2%),and occlusion(18.3%).Surgery-related complications were slightly less common and included wound infection(5.0%)and anastomotic leak(4.7%).The rate of total complications was similar between these two groups(SEMS:34.0%vs surgery:38.1%,P=0.60),but the surgeryrelated complications occurred earlier than stent-related complications(rate of early complications:33.7%vs13.7%,P=0.03;rate of late complications:32.3%vs12.7%,P<0.0001).The overall survival time of SEMSand surgery-treated patients was not significantly different(7.64 mo vs 7.88 mo).CONCLUSION:SEMS is less effective than surgery for palliation of incurable malignant colorectal obstructions,but is associated with a shorter time to chemotherapy and lower 30-d mortality. | Xiao-Dan Zhao Bao-Bao Cai Ri-Sheng Cao Rui-Hua Shi | 2013 | World Journal of Gastroenterology2013，19，33： | 15 |
| 16 | Current Situation of Heavy Metal Pollution in Farmland Soil and Phytoremediation Application显示文摘Phytoremediation technology is a newly-developed way of soil heavy metal pollution repair with high efficiency and good ecological comprehensive benefit. This paper briefly introduces the soil heavy metal pollution status at home and abroad,and focuses on the analysis of harm,sources and current situation of soil heavy metal pollution at home and abroad as well as mechanism and application of phytoremediation.Finally it discusses the key problems in phytoremediation technology that need to resolve in the future. | Yanfei HUANG Guifen CHEN Liumei XIONG Yuyi HUANG | 2016 | Asian Agricultural Research2016，8，1： | 15 |
| 17 | Characterization and Evaluation of OsLCT1 and OsN ramp5 Mutants Generated Through CRISPR/Cas9-Mediated Mutagenesis for Breeding Low Cd Rice显示文摘To explore how rice(Oryza sativa L.) can be safely produced in Cd-polluted soil, OsLCT1 and OsNramp5 mutant lines were generated by CRISPR/Cas9-mediated mutagenesis. One of OsLCT1 mutant(lct1×1) and two of OsNramp5 mutants(nramp5×7 and nramp5×9) were evaluated for grain Cd accumulation and agronomic performances. In paddy field soil containing approximately 0.9 mg/kg Cd, lct1×1 grains contained approximately 40%(0.17 mg/kg) of the Cd concentration of the wild type parental line, less than the China National Food Safety Standard(0.20 mg/kg). Both OsNramp5 mutants showed low grain Cd accumulation(< 0.06 mg/kg) in the paddy(approximately 0.9 mg/kg Cd) or in pots in soil spiked with 2 mg/kg Cd. However, only nramp5×7 showed normal growth and yield, whereas the growth of nramp5×9 was severely impaired. The study showed that lct1×1 could be used to produce rice grains safe for human consumption in lightly contaminated paddy soils and nramp5×7 used in soils contaminated by much higher levels of Cd. | LIU Songmei JIANG Jie LIU Yang MENG Jun XU Shouling TAN Yuanyuan LI Youfa SHU Qingyao HUANG Jianzhong | 2019 | Rice science2019，26，2： | 15 |
| 18 | Porous high entropy(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)B2: A novel strategy towards making ultrahigh temperature ceramics thermal insulating显示文摘Transition metal diborides based ultrahigh temperature ceramics(UHTCs) are characterized by high melting point, high strength and hardness, and high electrical and thermal conductivity. The high thermal conductivity arises from both electronic and phonon contributions. Thus electronic and phonon contributions must be controlled simultaneously in reducing the thermal conductivity of transition metal diborides. In high entropy(HE) materials, both electrons and phonons are scattered such that the thermal conductivity can significantly be reduced, which opens a new window to design novel insulating materials. Inspired by the high entropy effect, porous HE(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)B2 is designed in this work as a new thermal insulting ultrahigh temperature material and is synthesized by an in-situ thermal borocarbon reduction/partial sintering process. The porous HE(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)B2 possesses high porosity of 75.67%, pore size of 0.3–1.2 μm, homogeneous microstructure with small grain size of 400–800 nm, which results in low room temperature thermal diffusivity and thermal conductivity of 0.74 mm2 s^-1 and 0.51 W m^-1K^-1, respectively. In addition, it exhibits high compressive strength of3.93 MPa. The combination of these properties indicates that exploring porous high entropy ceramics such as porous HE(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)B2 is a novel strategy in making UHTCs thermal insulating. | Heng Chen Huimin Xiang Fu-Zhi Dai Jiachen Liu Yanchun Zhou | 2019 | Journal of Materials Science & Technology2019，35，10： | 15 |
| 19 | Biliary strictures complicating living donor liver transplantation:Problems,novel insights and solutions显示文摘Biliary stricture complicating living donor liver transplantation(LDLT) is a relatively common complication, occurring in most transplant centres across the world. Cases of biliary strictures are more common in LDLT than in deceased donor liver transplantation. Endoscopic management is the mainstay for biliary strictures complicating LDLT and includes endoscopic retrograde cholangiography, sphincterotomy and stent placement(with or without balloon dilatation). The efficacy and safety profiles as well as outcomes of endoscopic management of biliary strictures complicating LDLT is an area that needs to be viewed in isolation, owing to its unique set of problems and attending complications; as such, it merits a tailored approach, which is yet to be well established. The diagnostic criteria applied to these strictures are not uniform and are over-reliant on imaging studies showing an anastomotic narrowing. It has to be kept in mind that in the setting of LDLT, a subjective anastomotic narrowing is present in most cases due to a mismatch in ductal diameters. However, whether this narrowing results in a functionally significant narrowing is a question that needs further study. In addition, wide variation in the endotherapy protocols practised in most centres makes it difficult to interpret the results and hampers our understanding of this topic. The outcome definition for endotherapy is also heterogenous and needs to be standardised to allow for comparison of data in this regard and establish a clinical practice guideline. There have been multiple studies in this area in the last 2 years, with novel findings that have provided solutions to some of these issues. This review endeavours to incorporate these new findings into the wider understanding of endotherapy for biliary strictures complicating LDLT, with specific emphasis on diagnosis of strictures in the LDLT setting, endotherapy protocols and outcome definitions. An attempt is made to present the best management options currently available as well as directions for future research in the area. | Harshavardhan B Rao Arjun Prakash Surendran Sudhindran Rama P Venu | 2018 | World Journal of Gastroenterology2018，24，19： | 14 |
| 20 | Fe2N nanoparticles boosting FeNx moieties for highly efficient oxygen reduction reaction in Fe-N-C porous catalyst显示文摘Replacing Pt-based electrocatalysts for the oxygen reduction reaction (ORR) with high performance and low-cost non-precious metal catalysts is crucial for the commercialization of fuel cells.Herein,we present a highly efficient Fe-N-C porous ORR electrocatalyst with FeNx moieties promoted by Fe2N nanoparticles derived from Fe-doped zeolitic imidazolate framework.The best-performing Fe-N-C/HPC-NH3 catalyst exhibits a superior ORR activity with an onset (E0) and half-wave (E1/2) potential of 0.945 and 0.803 V (RHE),respectively,which is comparable to those of the commercial Pt/C in acidic media.Probing and acid-leaching experiments prove that FeNx moieties play an important role in the ORR and the Fe2N can further improve the ORR activity.Density functional theory calculation reveals a synergistic effect that the existence of Fe2N weakens the adsorption of ORR intermediates on active sites and lowers the reaction free energy of the potential limiting step,thus facilitating the ORR.Both experimental evidence and theoretical analysis for the enhancement of ORR activity by Fe2N decoration in Fe-N-C catalyst might inspire a new strategy for rational design of high performance non-precious metal catalysts. | Xiao Liu Hong Liu Chi Chen Liangliang Zou Yuan Li Qing Zhang Bo Yang Zhiqing Zou Hui Yang | 2019 | Nano Research2019，12，7： | 14 |
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